Attachment for vibrating devices for molding-flasks.



J. S. PERRY & A. L. STEVENS. ATTACHMENT FOR VIBEATING DEVICES FOR MOLDING PLASKS.

APPLICATION FILED MAR. 16, 1908.

Patented Dec. 22, 1908.

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J. S; PERRY & A. L. STEVENS. ATTACHMENT FOR VIBRATING DEVICES FOR MOLDING FLASKS.

APYLIOATION FILED MAR 16, 1908.

Patented Dec. 22, 1908.

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JOHN S. PERRY AND AYLMAR L. STEVENS, OF NASHUA, NEW HAMPSHIRE, ASSIGNORS TO THE NASIIUA SADDLERY HARDWARE COMPANY, OF NASHUA, NEW HAMPSHIRE, A CORPORA TION.

ATTACHMENT FOR VIBRATING DEVICES FOR MOLDING-FLASKS.

Specification of Letters Patent.

Patented Dec. 22, 1908.

Application filed March 16, 1908. Serial No. 421,753.

T all whom it may concern:

Be it known that we, JOHN S. PERRY and AYLMAR L. STEVENS, citizens of the United States, residing at Nashua, in the county of I-Iillsboro and State of New Hampshire, have invented certain new and useful Improvements in Attachments for Vibrating Devices for Molding-Flasks; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to attachments to power vibrators for vibrating the flask used in molding and casting iron, brass or other metal.

The object of the invention is to vibrate a flask after the sand has been properly packed about the pattern in order to make it possible to withdraw the latter without disturbing the sand and thereby injuring or enlarging the mold.

Heretofore it has been customary to transmit vibrations directly to the pattern, to a bar connecting a series of patterns, to a table upon which the flask is placed, or in some other way which fails to produce the satisfactory results which are attained in the use of our device.

With the above and other objects in view the invention consists in the novel construction hereafter described and more particularly pointed out in the claims.

In the accompanying drawings :Figure 1 is a plan view of the device. Fig. 2 is a side elevation thereof. Fig. 3 is a section through the frame on the line 3-3 of Fig. 1, looking in the direction indicated by the arrow, and.

showing the vibrating means in elevation. Fig. 4: is an elevation of a clamp. Fig. 5 is a section through the frame on the line 55 of Fig. 1 showing certain parts in elevation.

Referring to the drawings in detail, 1 represents the main frame of the device, and 2 indicates a supporting device located at one end of the frame, said device having slots therein adapted to engage bolts 4., which construction permits of adjustment, in order to allow the clamp carried by the supporting device 2 to be properly positioned with ref erence to the vibrating mechanism. The central cross-bar of the frame is indicated by 6.

Lugs 7 are bolted to the end of the frame opposite to that just referred to and are provided with apertures through which the legs 8 pass, the said legs being retained in position by set screws 9. A vibrating bar 10 ex tends transversely of the frame-work and is secured to the plates 9 by means of bolts 11 which pass through enlarged apertures in the bar 10 in order to permit of the vibration of the latter. Washers 12 are located between the heads of the bolts and the bar 10, and a locking device 13 passes through the heads of the bolts, thereby preventing the tightening or loosening of the latter when in operation. Gages 14 are connected with the bar 10 by means of bolts 15, which bolts also pass through washers, and a gage 17 is secured to one of the plates 9. These gages are designed to contact with the edges of the flask (not shown in the drawings).

A bar 18 is secured to one of the plates-9 as indicated at the left in Fig. 3, and supports the pneumatic or other vibrating device 19, of ordinary construction, which communicates vibratory motion to the bar 10. The connection 20 provides means for attaching a pipe leading from a source of air supply. The bar 2 is provided with downwardly projecting lugs 22 and 23 for supporting the clamping device. The latter includes a cylindrical member 24 having its bearings in apertures in the lugs 22 and 23, said cylindrical device carrying at its outer end a cross-bar 25 by means of which the clamp is operated. A spring 26 encircles the member 24 and bears against the lug 22 and a rigidly mounted collar 27. Clamped in the portion 28 of the member 24 is an arm 29 carrying in a recessed off-set ortion 30 at its upper end an anti-friction r0 ler 31. The spring 26 forces this device against the flask, while the handle 25, when pulled outwardly against the spring, permits of the release of the flask.

From the above description it will be apparent that in 0 eration the flask is placed on the frame-Wor in such manner as to contact with the several gages and with the clamping device, and the vibrator, when in operation, imparts a vibratory motion to the flask, as stated.

What we claim as new is 2-- 1. In a device of the class described, a frame-work, means for securing a flask thereon, said means including a spring-pressed clamp, and a vibrating device transmitting motion to said flask.

bar and adapted to transmit motion to a flask mounted on the frame, and a spring 15 actuated clamp carrying an anti-friction roller mounted on the opposite end of the frame and adapted to contact with said flask.

In testimony whereof we affix our signa- 2 tures in presence of two witnesses.

JOHN S. PERRY. AYLMAR L. STEVENS. Witnesses:

O. IsABE LE BAKER, JosEPI-r L. CLoUGH. 

